After installing Plesk Email Security on Debian 11, Amavis fails to start

Symptoms

• After installing Plesk Email Security on Debian 11, Amavis is shown as stopped in the Plesk Email Security dashboard.

• Errors like the following are found in journald:

  # journalctl -u amavis
  example.com amavisd-new[432066]: ERROR: MISSING REQUIRED ADDITIONAL MODULES:
  example.com amavisd-new[432066]: DBD::mysql
  example.com amavisd-new[432066]: DBD::mysql

Cause

The package perl-DBD-MySQL required for the Amavis service is missing from the server. It is a Plesk extension bug with ID EXTPLESK-3895.

Resolution

Until the bug is fixed, as a workaround, install the missing package manually:

1. Connect to the server via SSH.

2. Run the following command

   # apt install libdbd-mysql-perl

3. Start Amavis service:

   # systemctl start amavis